Alton charge for wi-fi at the hotels so it wouldn't surprise me if theme park wi-fi will cost. I could see it being something along the lines of having to go to guest services to obtain a password to gain access for how ever long you wish to use it for. Not sure if many people would use it or not, depends on the price of it I suppose.
Just checked into the hotels and a pleasant suprise... wifi is free!
Unsure when they did this, you have to enter your email address for 24 hours access, i would assume you can re-enter after that.
I now have my phone and tablet connected using same email so it's made the stay rather better and will be posting pics etc to facebook giving a bit of publicity to the hotels
Good move finally i say :-)